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DangerousStudent
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It all depends what limonene is soluble in, because there are water and oil based anti-foaming agents.
Quick Note. Say we had some substance that needed distilling, If we put a thick layer of less dense liquid on the top with a higher boiling point,
would it stop the bottom liquid from forming bubbles. Might need to do something about the less dense liquid splashing out. Any thoughts?
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confused
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i dont think so, the bubbles is the gaseous state of the substance that you are distilling...so i dont think that it'll work
or i may be completely wrong...its late and i might not be thinking straight
[Edited on 12-4-2013 by confused]
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DangerousStudent
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Sorry, not bubbles, foam. I was thinking that the top liquid (naturally not foaming, say oil) would stop the liquid layer around the gas from forming.
I did prepare an experiment with oil and water (with fairy liquid as a foaming agent), but all I got was an emulsion .
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confused
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because soap emulsifies the oil, making it soluble in water
I'm pretty sure the emulsion will still distill though, if you put a few drops of mineral oil into the substance, it will probably stop, or at least
reduce the amount of foam in the substance
[Edited on 12-4-2013 by confused]
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DangerousStudent
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Confused, I believe that we are talking about two completely different things.
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confused
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sorry...what were you asking again?
[Edited on 12-4-2013 by confused]
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DangerousStudent
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About using a secondary liquid, on top of the liquid to be distilled, to prevent a foam from forming.
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confused
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That should work although you can just as easily use a few drops of silicon or mineral oil to reduce the surface tension thus inhibiting the foam from
forming
Edit: found another post discussing the same thing
https://www.sciencemadness.org/whisper/viewthread.php?tid=23...
Edit, did a few experiments, oil seems to work to a certain extent, but alcohols like isopropanol and ethanol seem to work well, of course there may
be a few flaws in my setup, so you might want to try it out for yourself
[Edited on 13-4-2013 by confused]
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DangerousStudent
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I fear that alcohols will have a too low boiling point.
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confused
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or you could just distill it twice
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DangerousStudent
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Ethanol forms an azeotrope with water. You distillates might get contaminated.
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confused
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well, stream distillation appears to work well as long as you watch the heat and boiling chips are used to prevent bumping, if you want to further
purify it just distill it further
http://goo.gl/eXFLs
[Edited on 13-4-2013 by confused]
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DangerousStudent
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No good for inorganic stuff
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confused
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well, steam distillation appears to work well as long as you watch the heat to prevent foaming and boiling chips are used to prevent bumping, if you
want to further purify it just distill it further
http://goo.gl/eXFLs
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DangerousStudent
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Just wondering, how long is your condenser and fractionating colum.
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confused
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well, my glassware hasnt been delivered yet,
i ordered a 400mm liebig condenser and 300mm vigreux column
but in the meantime, my school's lab tech has been kind enough to let me use some of the glassware that he has
[Edited on 13-4-2013 by confused]
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Nicodem
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Thread Split
18-4-2013 at 10:58 |
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